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Finding the Fourth Proportional to 561,008.12, 774,257.64 and 316,000.94

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Solution

The fourth proportional to 561,008.12, 774,257.64 and 316,000.94 is: 436,118.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,008.12 : 774,257.64 = 316,000.94 : x
  2. Step 2: Convert to fraction form
    561,008.12/774,257.64 = 316,000.94/x
  3. Step 3: Cross multiply
    561,008.12x = 774,257.64 × 316,000.94
  4. Step 4: Simplify right side
    561,008.12x = 244,666,142,042.18
  5. Step 5: Solve for x
    x = 244,666,142,042.18/561,008.12
  6. Step 6: Final answer
    x = 436,118.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.